HTML

Question 1

What does a doctype do?

Answer 1

Tells the browser what version of HTML and how to render the page.

Question 2

What’s the difference between full standards mode, almost standards mode and quirks mode?

Answer 2

• Full standards mode is default, and has been since IE 6.

- There are no valid reasons to use anything but

Question 3

What’s the difference between HTML and XHTML

Answer 3

• HTML is the universal standard

- XHTML is essentially defunct.

Question 4

How do you serve a page with content in multiple languages?

Answer 4

Adding “lang” attribute to the html element

Question 5

What are data- attributes good for?

Answer 5

Storing extra data on an element

Question 6

What are the building blocks of HTML5?

Answer 6

• HTML defines structure (title, header, tables, inputs)
• CSS defines style (font, color, formatting)
• JS defines dynamic behavior

Question 7

What are cookie, sessionStorage and localStorage?

Answer 7

Client side storage techniques

Question 8

Describe the difference between script, script async, and script defer tags.

Answer 8

• script interrupts page rendering until script runs
• script async does not interrupt rendering, runs when script is available. Think CDNs.
• script defer runs after rendering

Question 9

Why is it generally a good idea to position CSS links between head tags and JS scripts just before body tags?

Answer 9

• link tags at the beginning to prevent FOUC

- Scripts at the end to prevent rendering interruptions (unless defer/async)

Question 10

What is progressive rendering?

Answer 10

-Chunking the HTML into separate blocks that load when each is rendered

Question 11

HTML templating languages

Answer 11

Jade, Handlebars